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A9799

Sigma-Aldrich

Gélose

High gel strength, suitable for plant cell culture

Synonyme(s) :

Agar, Agar-agar

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About This Item

Formule linéaire :
(C12H18O9)n
Numéro CAS:
9002-18-0
Numéro CE :
232-658-1
Numéro MDL:
MFCD00081288
Code UNSPSC :
50405901
Nomenclature NACRES :
NA.21

Source biologique

algae (Rhodophyceae)

Forme

powder

Technique(s)

cell culture | plant: suitable

Température de transition

transition temp 32-38 °C (1.5%)

Résistance du gel

>1000 g/cm2

Application(s)

agriculture

Température de stockage

room temp

InChI

1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1

Clé InChI

GYYDPBCUIJTIBM-DYOGSRDZSA-N

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Description générale

Agar is a natural polymer extracted from red alga Rhodophyceae, primarily, consisting of alternative D- and L-galactose units. This type of high gel strength agar is used when a firmer gel is required and mostly suitable for plant cell culture.
Agar is a polysaccharide complex obtained through bleaching and hot water extraction of agarocytes from the red alga Rhodophyceae, found in the Pacific and Indian Oceans and the sea of Japan. The genera Gelidium, Acanthopeltis, Ceramium, Pterocladia and Gracilaria predominate in agar production. Agar is composed of about 70% agarose and 30% agaropectin.

Application

Agar has been used:
  • as a component of the fruit fly diet
  • as a component of saline-agar for the approximation of gray matter from brain
  • in in vitro root nodulation assay of Glycine max seeds

Agar has been used:
  • in the preparation of laboratory diet to maintain the culture of D. melanogaster wild-type larva
  • as a high gel strength agar in the seed culture media to grow Arabidopsis thaliana mutant seeds
  • to construct a tissue-mimicking phantom to test the imaging performance of an ultrasound transducer

Actions biochimiques/physiologiques

Agar with a higher percentage of anhydrous units in the backbone of their chemical composition provides superior mechanical stiffness and strength to the pristine hydrogel.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

Certificats d'analyse (COA)

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Luisa Euler et al.
Sensors (Basel, Switzerland), 21(5) (2021-03-07)
Textile electrodes, also called textrodes, for biosignal monitoring as well as electrostimulation are central for the emerging research field of smart textiles. However, so far, only the general suitability of textrodes for those areas was investigated, while the influencing parameters
Takaaki Ogura et al.
Frontiers in plant science, 11, 563-563 (2020-06-26)
Magnesium (Mg) is essential for many biological processes in plant cells, and its deficiency causes yield reduction in crop systems. Low Mg status reportedly affects photosynthesis, sucrose partitioning and biomass allocation. However, earlier physiological responses to Mg deficiency are scarcely
Improved nodulation and seed yield of soybean (Glycine max) with a new isoflavone-based inoculant of Bradyrhizobium elkanii
Riviezzi B, et al.
Rhizosphere, 15, 100219-100219 (2020)
Agar gel strength: A correlation study between chemical composition and rheological properties
Bertasa M, et al.,
European Polymer Journal, 123, 109442-109442 (2020)
Junsu Lee et al.
Sensors (Basel, Switzerland), 18(7) (2018-07-18)
The superharmonic imaging of tissue has the potential for high spatial and contrast resolutions, compared to the fundamental and second harmonic imaging. For this technique, the spectral bandwidth of an ultrasound transducer is divided for transmission of ultrasound and reception
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